12118620 has 72 divisors (see below), whose sum is σ = 36260784. Its totient is φ = 3013632.

The previous prime is 12118619. The next prime is 12118627. The reversal of 12118620 is 2681121.

12118620 = T₄₁₆ + T₄₁₇ + ... + T₅₂₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12118627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111126 + ... + 111234.

It is an arithmetic number, because the mean of its divisors is an integer number (503622).

Almost surely, 2^12118620 is an apocalyptic number.

12118620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12118620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18130392).

12118620 is an abundant number, since it is smaller than the sum of its proper divisors (24142164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12118620 is a wasteful number, since it uses less digits than its factorization.

12118620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12118620 is about 3481.1808341423. The cubic root of 12118620 is about 229.6947431193.

Adding to 12118620 its reverse (2681121), we get a palindrome (14799741).

The spelling of 12118620 in words is "twelve million, one hundred eighteen thousand, six hundred twenty".